Metal enhanced fluorescence using nanostructures on silver formed with Ti:Saphire femtosecond pulsed laser

被引：1
|
作者：
Mattos, Vicente S. [1 ]
Paolillo, Fernanda R. [1 ]
Cavalinni, Daniel [1 ]
Pereira-da-Silva, Marcelo A. [1 ]
de Souza, Marco A. A. [1 ]
Yasuoka, Fatima M. M. [1 ,2 ]
Guimaraes, Francisco E. G. [1 ]
de Castro Neto, Jarbas C. [1 ]
机构：
[1] Univ Sao Paulo, Inst Fis Sao Carlos, Av Trabalhador Sao Carlense 400, BR-13566590 Sao Carlos, SP, Brazil
[2] Univ Paulista, Inst Ciencias Exatas & Tecnol, Av Alberto Benassi 200, BR-14804300 Araraquara, SP, Brazil
来源：
LASER-BASED MICRO- AND NANOPROCESSING XIV | 2020年 / 11268卷
基金：
巴西圣保罗研究基金会;
关键词：
Metal enhanced fluorescence; Femtosecond laser; Nanostructures;
D O I：
10.1117/12.2545963
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Metal enhanced fluorescence is a phenomenon that occurs when a fluorophore is positioned near a conductive structure. Structures can be formed by the interaction of high-energy laser with a sample, on which the femtosecond laser pulses interact with the surface without heat effects. This work aims to study nanostructure formation in polished bulk silver, in order to amplify signals of fluorescence. A Titanium-sapphire femtosecond laser was used to mark silver surfaces. SEM images shows nanostructures formed in chaotic agglomerate of nanospheres with size of 50-800nm. Using Protoporphyrin-IX, the fluorescence amplification was around 300 times compared to a surface without the nanostructures.
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页数：7
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